6.5 creed magnum

[alexnelon]

What’s your thoughts about the barrel, most use a basic soft 416, or 416r/416t, so the barrel has to also contain the 80,000 psi until release, so other than the obvious reduction in less barrel life could it be dangerous or cause any bulging.

Yield strength for 416r is around 90,000 psi.

I wouldn’t worry about it.

 

[Castle Rock]

I think this high pressure cartridge thing is a great idea. Earlier in this thread I said it’s not for me based on the specific cartridge in this case. I have not changed my opinion. But in principle this is fantastic and, assuming it works as advertised with no unforeseen shortcomings, its just a matter of when its applied to a cartridge that matches my wants.

That said, I think its very, very, very, VERY premature to think this puts regular cartridges or even the 6.5prc out of business. Just for example, even if it works as well as advertised, what are the patent issues around the technology? If its limited to one manufacturer, or licensing raises cost too much, Im guessing that serves as more of a headwind to widespread adoption than it helps if it leaves the rest of the entire ammo industry without it. Apart from the need to feed every existing rifle on the planet. I mean, .308 win is the most obsolete cartridge out there if you listen to some, yet its still among the worlds best sellers. Ditto 3006, 30-30, etc. These things just dont happen fast.

You must be a lot of fun at parties.

 

[Macintosh]

Sure, whatever.
Just think the gushing over this is pretty comical. As far as I can see it’s still very much marketing fluff with extremely little actual info or experience present, yet people are talking about it as if it were the re-invention of the modern rifle cartridge, with everything else rendered obsolete—ie “Hornady dying in a PRC graveyard” as well as other comments. I dont think thats reality. If calling that out makes me a stick in the mud, sorry to rain on your pet idea. I did say it is a fantastic concept. I just havent run into many great ideas before that worked out exactly as people said they would. I am genuinely looking forward to all you early adopters rubbing in how great these are in a couple years.

 

[Dan Carey]

Wher

Yield strength for 416r is around 90,000,000 psi.

I wouldn’t worry about it.

Where did that Yield come from?

 

[BBob]

Yield strength for 416r is around 90,000,000 psi.

I wouldn’t worry about it.

90 million???

 

[BBob]

Where did that Yield come from?

I believe he added too many zeros. Average yield psi is around 100,000psi for 416 in an RC28 hardness which is about what barrels are. Anyone can look up tensile and yield strengths of various steels. Most values will be in ksi and or MPa and will need to be converted to psi.

 

[alexnelon]

90 million???

Good catch, that’s not what I meant to type.


90-145,000 psi depending on heat treating etc.

 

[S-3 ranch]

I think this high pressure cartridge thing is a great idea. Earlier in this thread I said it’s not for me based on the specific cartridge in this case. I have not changed my opinion. But in principle this is fantastic and, assuming it works as advertised with no unforeseen shortcomings, its just a matter of when its applied to a cartridge that matches my wants.

That said, I think its very, very, very, VERY premature to think this puts regular cartridges or even the 6.5prc out of business. Just for example, even if it works as well as advertised, what are the patent issues around the technology? If its limited to one manufacturer, or licensing raises cost too much, Im guessing that serves as more of a headwind to widespread adoption than it helps if it leaves the rest of the entire ammo industry without it. Apart from the need to feed every existing rifle on the planet. I mean, .308 win is the most obsolete cartridge out there if you listen to some, yet its still among the worlds best sellers. Ditto 3006, 30-30, etc. These things just dont happen fast.

You are 100% correct, federal owns the patient rights on the tech, so I doubt a lot of cals will receive a response unless federal decides otherwise!
308 = 30 govt , 30 gov = 300 mag speed , but people are still going to keep on going on with their present stuff but !
F Hornady and their PRC loaded with garbage bullets

 

[BBob]

Good catch, that’s not what I meant to type.


90-145,000 psi depending on heat treating etc.

But we should also say that by just stating a psi level doesn’t directly correlate or directly inform the casual reader as to the strength in the system. It’s just a number being thrown out. You would use those tensile and yield numbers to do a proper hoop strength calculation with the barrel and cartridge dimensions to get the real story on if it is strong enough for the application. Stating the yield strength all by itself doesn’t tell us that. If one were to combine too small of a tenon with too large of a diameter case we might exceed a safe yield strength as far as chamber pressure goes. That said in the parameters being discussed in this thread it is (strong enough)

I’ll also add that IMO in this discussion bolt thrust would come first as a safety concern and hoop strength second. That might not always be the case in other systems.